<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
    </style>
</head>

<body>
    <canvas id="canvas"></canvas>
    <script>
        var canvas = document.querySelector("#canvas");
        var WIDTH = 1000,
            HEIGHT = 1000;

        canvas.width = WIDTH;
        canvas.height = HEIGHT;
        var ctx = canvas.getContext('2d');


        ctx.arc(100, 200, 100, 0, 2 * Math.PI)
        ctx.strokeStyle = 'blue'
        ctx.lineWidth = 5
        ctx.stroke()

        ctx.beginPath()
        ctx.arc(320, 200, 100, 0, 2 * Math.PI)
        ctx.strokeStyle = 'black'
        ctx.lineWidth = 5
        ctx.stroke()

        ctx.beginPath()
        ctx.arc(540, 200, 100, 0, 2 * Math.PI)
        ctx.strokeStyle = 'red'
        ctx.lineWidth = 5
        ctx.stroke()

        ctx.beginPath()
        ctx.arc(210, 290, 100, 0, 2 * Math.PI)
        ctx.strokeStyle = 'gold'
        ctx.lineWidth = 5
        ctx.stroke()

        ctx.beginPath()
        ctx.arc(440, 290, 100, 0, 2 * Math.PI)
        ctx.strokeStyle = 'green'
        ctx.lineWidth = 5
        ctx.stroke()
    </script>
</body>

</html>